D4071: resolve: graduate resolve.mark-check from experimental, add docs

[spectral (Kyle Lippincott)]

spectral marked an inline comment as done.
spectral added inline comments.

INLINE COMMENTS

> pulkit wrote in config.txt:452
> Maybe rephrase to something like that if `--all` flag is passed, only warning will be shown and error won't be raised.
> (I am not good at english, so feel free to decide how it is better and let me know, I will push then.)

Please take another look.

REPOSITORY
  rHG Mercurial

REVISION DETAIL
  https://phab.mercurial-scm.org/D4071

To: spectral, #hg-reviewers
Cc: pulkit, mercurial-devel